I am experiencing significant frustration with the tab management system in the Opera browser. Specifically, when I accidentally drag a tab out of the window, it creates a new instance of Opera instead of simply moving the tab. This wouldn't be an issue if I was able to just move the tab back with all the others, but that seems to not be possible. This behavior disrupts my workflow and makes it difficult to manage my tabs effectively. I believe that a more seamless drag-and-drop functionality, or at least an option to prevent new instances from being created, would greatly enhance the user experience. I hope you can consider this feedback for future updates.